Transcript KHAZAR University/ Azerbaijan 2017/ 2019 - MSc

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Name/Surname - Eldar Mansimov
Nationality – Azerbaijan
2008/2013 - BSc of Petroleum Engineering/ KHAZAR University/ Azerbaijan
2017/ 2019 - MSc Geophysical Engineering/ SAKARYA University
Deep Seismic
Reflection Profiling
in the Caspian Sea
#GPE532
Current Topics in Geophysics
ABSTRACT
• The southwest edge of Eurasia is a tectonically and
structurally complex region that includes the Caspian
and Black Sea basins, the Caucasus Mountains, and
the high plateaus south of the Caucasus.
• Crustal and upper mantle velocities show great
heterogeneity in this region and regional phases
display variations in both amplitudes and travel time.
Furthermore, due to a lack of quality data, the region
has largely been unexplored in terms of the detailed
lithospheric seismic structure.
• A unified high-resolution 3D velocity and attenuation
model of the crust and upper mantle will be developed
and calibrated. This model will use new data from 23
new broadband stations in the region analyzed with a
comprehensive set of techniques.
Caspian Sea
Coordinates
41°40′N 50°40′E
Type
Endorheic Saline, Permanent,
Natural
Primary inflows
Volga River, Ural River, Kura
River, Terek River
Primary outflows
Evaporation
Catchment area
3,626,000 km (1,400,000 sq mi)
Basin countries
Azerbaijan,Iran, Kazakhstan,
Russia, Turkmenistan
Max. length
1,030 km (640 mi)
Max. width
435 km (270 mi)
Surface area
371,000 km (143,200 sq mi)
Average depth
211 m (690 ft)
Max. depth
1,025 m (3,360 ft)
Water volume
78,200 km (18,800 cu mi)
Residence time
250 years
Shore length
7,000 km (4,300 mi)
Surface elevation
−28 m (−92 ft)
Islands
26+
2
2
3
Central Caspian
Highlights
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Significant discoveries in Azerbaijan,Russian and Kazakh (offshore) sectors
Prolific Triassic, Jurassic and Cretaceous reservoirs
Structural traps in post-rift sequences and adjacent regional highs
Source rocks in L-M Triassic and possibly L-M Jurassic
North Caspian Basin Highlights
• Prolific hydrocarbon province with producing fields and infrastructure
• Devono-Carboniferous carbonate reservoirs sealed by diapiric salt
• Fluvio-deltaic post-salt reservoirs sealed by intra-formational and overlying
shale sequences
• Structures similar to those observed in producing fields have been identified
on 2D lines over the open blocks
Caspian Basin Highlights
• The Caucasus-Caspian region is an area of complex
structure accompanied by large variations in seismic wave
velocities and attenuation (e.g,. Ritzwoller and Levshin,
1998; Murphy et al., 2005; Mitchell et al., 1997). In such
areas, accurate geophysical models are fundamentally
important to nuclear monitoring.
• In particular, the great thickness and irregular geometry of
the low velocity and low density sediments in the Caspian
and Black Sea basins (e.g. Laske and Masters, 1997) creates
profound effects on seismic waveforms, especially on
surface waves and
regional phases.
Caspian Basin Highlights
Caspian Basin Highlights
• The primary focus is the Caucasus-Caspian region, which is
roughly defined as lying between 40 and 55 E longitude
and between 37 and 44 N latitude (Figure 1).
• A unified upper mantle/crustal velocity model will be
developed using multiple techniques. In addition, the same
data will be used to construct detailed maps of regional
phase attenuation (Lg, Pg, Pn, and Sn).
• Finally, the results will be compared and validated using the
various algorithms as well as
independent data sets (local and regional events and active
source studies).
Seismicfluidogeodynamical (SFGD) monitoring in Azerbaijan
• It was first developed in the Department of "Geochemistry" RCSS ANAS for 20012009 (author of the algorithms and mathematical software - Keramova R.A.).
• This technology consists of mathematical software for 4 rapid methods that are
automated and published. Scientific novelty of this work is that over a long period
(1979-2009) SFGD monitoring in Azerbaijan, have been developed 4 rapid method
for the operational definition of "ranges - intervals" 3 main source parameters
(implementation time, magnitude, coordinates). The purpose of these studies - the
rapid detection of "dangerous" focal zones of earthquakes in the Caspian Sea in
Azerbaijan, as well as - the border regions of neighboring countries (RussiaDagestan, Georgia, Armenia, Turkey and Iran).
1) earthquake
sources in the
waters of the
Middle and
Southern
Caspian
spatially
distributed
within six (6)
seismogenic
zones (fig. 1.)
2) informative
combinations
seismicgeochemical
(SGC) and
seismichydrogeodynami
cal (SHGD) parameters
for specific seismic zone
are stable and the
individual (fig. 2.);
• Geophysical survey vessel Gilavar was delivered to Caspian Sea
on 1 August 2011 to hold 3D seismic exploration works on offshore
Shafag-Asiman structure, sources in BP-Azerbaijan said.
• BP has taken on greater responsibility and
determination since drilling of this kind of wells
will be the first in the practice of the company.
The depth of the well will be 7,000 meters with
the water column reaching 750 m.
• Shah Deniz gas field is the largest natural gas field in Azerbaijan. It is situated in the
South Caspian Sea, off the coast of Azerbaijan, approximately 70 kilometres (43 mi)
southeast of Baku, at a depth of 600 metres (2,000 ft). The field covers approximately
860 square kilometres (330 sq mi).
• Japan Azerbaijan Oil Co., a joint venture led by State Oil Co. of Azerbaijan Republic,
awarded a contract for collection and processing of shallow-water 3D seismic data
over a Caspian Sea production-sharing agreement area to Caspian Geophysical, a
joint venture of Schlumberger Ltd. and SOCAR. The area includes the Yanan-Tava,
Mugan-deniz, and Atasgah structures.
References
1. SCAN RESULTS OF SEISMIC ZONES IN CASPIAN SEA ON THE
SEISMICFLUIDOGEODYNAMICAL (SFGD) FIELDS OF AZERBAIJAN by
Keramova Ramida Agadadash
2. The Crustal Structure of the southern Caspian Region by S. Mangino and K.
Priestly
3. Seismic Studies of the Caspian Basin and Surrounding Regions by S. Mangino
and K. Priestly
4. HIGH-RESOLUTION SEISMIC VELOCITY AND ATTENUATION MODELS OF
THE
CAUCASUS-CASPIAN REGION Robert J. Mellors, Rengin Gök, and Eric A.
Sandvol
5. Bp.com/caspian
THANK YOU
©2017